<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.$store.state.city}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hotCities" @click="handleCityClick(item.name)">
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for = "(item,key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list" v-for="(innerItem,index) of item" @click="handleCityClick(innerItem.name)">
                    <div class="itemCity border-bottom">{{innerItem.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
    export default{
        name:"CityList",
        props:{
            cities:Object,
            hotCities:Array,
            letter:String
        },
        methods:{
            handleCityClick(city){
                this.$store.commit("changeCity",city) 
                this.$router.push("/")
            }
        },
        mounted (){
            this.scroll = new Bscroll(this.$refs.wrapper)
        },
        watch:{
            letter(){
                if(this.letter){
                    const element = this.$refs[this.letter][0]
                    console.log(element)
                    this.scroll.scrollToElement(element)
                }
            }
        }
    }
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
    .border-topbottom
        &:before
            border-color:#ccc
        &:after 
            border-color:#ccc   
    .list
        overflow hidden
        position:absolute
        top:1.78rem
        left 0
        right 0
        bottom 0   
        .title
            line-height 0.7rem
            background-color #eee
            padding-left:0.2rem
            color:#666
            font-size 0.3rem
        .button-list
            overflow hidden
            padding:0.1rem 
            .button-wrapper
                float left
                width:33.33%
                .button
                    margin:0.1rem
                    padding:0.1rem 0
                    text-align center
                    border:0.02rem solid #ccc
        .item-list
            .itemCity
                line-height 0.6rem
                padding: 0.2rem           
</style>
